The worst case scenario if Libra would become successful is that Bitcoin is going to hit just $40,000 in 2020 and it will take another 10 to 12 months for its value to double. That is the worst case, mate.

Do I need to interpret it for you? 

It means Libra, successful or not, is going to add positive points to Bitcoin's reputation. Libra, successful or not, is enough proof that the way Bitcoin paved for the future was simply right.